Method for producing ethylene and propylene

Details Method for producing ethylene and propylene Method for producing ethylene and propylene

2011-02-08

2011-02-08

Nguyen, Tam M (Department: 1797)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By c content reduction, e.g., cracking, etc.

C585S653000, C208S073000, C208S076000, C208S113000, C208S120150

Reexamination Certificate

active

07884257

ABSTRACT:
The invention is to provide a catalyst for long-term, high-yield and stable production of ethylene and propylene in an efficient and simple method of catalytic conversion from a hydrocarbon material. The invention relates to a method for producing ethylene and propylene by contacting a hydrocarbon material that contains an olefin having from 4 to 12 carbon atoms in an amount of at least 20% by weight, with a zeolite-containing shaped catalyst satisfying the following requirements (1) to (4), in a reactor for catalytic conversion of that olefin:(1) the zeolite is an intermediate pore-size zeolite having a pore size of from 5 to 6.5 angstroms,(2) the zeolite does not substantially contain a proton,(3) the zeolite contains at least one metal selected from the group consisting of metals belonging to the Group IB of the Periodic Table,(4) the zeolite has a silica/alumina molar ratio (SiO2/Al2O3molar ratio) of from 800 to 2,000.

REFERENCES:
patent: 6307117 (2001-10-01), Tsunoda et al.
patent: 2001-0024221 (2001-03-01), None
patent: WO-96/13331 (1996-05-01), None
patent: WO-00/10948 (2000-03-01), None
patent: WO-2004/072002 (2004-08-01), None
patent: WO-2006/009099 (2006-01-01), None
English translation of Korean Office Action issued on Nov. 25, 2009 in corresponding Korean Application No. 10-2008-7006307.

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